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The coma cluster after lunch: Has a galaxcy group passed through the cluster core?We propose that the Coma cluster has recently undergone a collision with the NGC 4839 galaxy group. The ROSAT X-ray morphology, the Coma radio halo, the presence of poststarburst galaxies in the bridge between Coma and NGC 4839, the usually high velocity dispersion for the NGC 4839 group, and the position of a large-scale galaxy filament to the NE of Coma are all used to argue that the NGC 4839 group passed through the core of Coma approximately 2 Gyr ago. We present a new Hydro/N-body simulation of the merger between a galaxy group and a rich cluster that reproduces many of the observed X-ray and optical properties of Coma/NGC 4839.
Document ID
19950052404
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Burns, Jack O. (New Mexico State University Las Cruces, NM, United States)
Roettiger, Kurt (New Mexico State University Las Cruces, NM, United States)
Ledlow, Michael (New Mexico State University Las Cruces, NM, United States)
Klypin, Anatoly (New Mexico State University Las Cruces, NM, United States)
Date Acquired
August 16, 2013
Publication Date
June 1, 1994
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 427
Issue: 2
ISSN: 0004-637X
Subject Category
ASTROPHYSICS
Funding Number(s)
CONTRACT_GRANT: NAGW-3152
Distribution Limits
Public
Copyright
Other